I think he wants to move his mail folders to dropbox or similar and then tell The Bat that's where they are, both for reading existing mail and for downloading new mail (e.g. download fr om POP3 server and save to dropbox).

I don't use the cloud much yet but I think that's wh ere he's going. It would give access from multiple devices without storing locally.

If you can define a path to the location you want to use, something like Z:\somewhere\ then you can create directory that's called Z:\somewhere\mymail and use that as your mail directory (Options -> Preferences -> System -> Mail Directory)

__________________________________I'm just a user of The Bat! I don't work for Ritlabs.

Just use IMAP accounts. Mail is 'In the Cloud', available to all clients and for the best you can keep local copies of the mail. Find it much better than using a webclient / webpage for working with mail.

IMAP Services:

www.fastmail.fm <- best imap serverwww.gmx.com <- not bad imap free (web client is 'poor')mail.google.com <- not the best IMAP imho